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 ###Instrução: Qual é o poder quando ch# é tv-26 e dyfj-tv?
 ###Tabelas: CREATE TABLE rolling_stock (rolling_stock_id AUTO_INCREMENT PRIMARY KEY, Road number VARCHAR, Traction VARCHAR, Builder VARCHAR, Built VARCHAR, Service VARCHAR, Wheels VARCHAR, Weight VARCHAR) CREATE TABLE u.s._ratings (u.s._ratings_id AUTO_INCREMENT PRIMARY KEY, # INT, Episode VARCHAR, Air Date VARCHAR, Rating VARCHAR, Share INT, 18–49 (Rating/Share) VARCHAR, Viewers (m) VARCHAR, Weekly Rank INT) CREATE TABLE clubs (clubs_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, First season in top division VARCHAR, Number of seasons in top division INT, First season of current spell in top division VARCHAR, Number of seasons in Liga MX INT, Top division titles INT) CREATE TABLE list_of_deputy_prime_ministers_of_spain (list_of_deputy_prime_ministers_of_spain_id AUTO_INCREMENT PRIMARY KEY, Deputy Prime Minister VARCHAR, Took office INT, Left office VARCHAR, Prime Minister VARCHAR, Term VARCHAR, Party VARCHAR) CREATE TABLE rjtv_stations_nationwide_2nd_avenue (rjtv_stations_nationwide_2nd_avenue_id AUTO_INCREMENT PRIMARY KEY, Branding VARCHAR, Callsign VARCHAR, Ch. # VARCHAR, Power (kW) VARCHAR, Station Type VARCHAR, Coverage (Transmitter site) VARCHAR)  
SELECT Power (kW) FROM rjtv_stations_nationwide_2nd_avenue WHERE Ch. # = TV-26 AND Callsign = DYFJ-TV